'commit'

TangDou/AcWing/DP/ShuWei/HDU4734_BruteForce.cpp

@@ -0,0 +1,25 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+int F(int x) {
+    if (x == 0) return 0;
+    return F(x / 10) * 2 + x % 10;
+}
+int fa;
+int main() {
+    int T;
+    int num = 1;
+    cin >> T;
+
+    while (T--) {
+        int x, y;
+        cin >> x >> y;
+        fa = F(x);
+        int cnt = 0;
+        for (int i = 0; i <= y; i++)
+            if (F(i) <= fa) cnt++;
+
+        printf("Case #%d: %d\n", num++, cnt);
+    }
+    return 0;
+}